361220321631 has 8 divisors (see below), whose sum is σ = 518675333680. Its totient is φ = 222289428672.

The previous prime is 361220321597. The next prime is 361220321641. The reversal of 361220321631 is 136123022163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 361220321631 - 2¹¹ = 361220319583 is a prime.

It is a super-2 number, since 2×361220321631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361220321641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4631029726 + ... + 4631029803.

It is an arithmetic number, because the mean of its divisors is an integer number (64834416710).

Almost surely, 2^361220321631 is an apocalyptic number.

361220321631 is a deficient number, since it is larger than the sum of its proper divisors (157455012049).

361220321631 is a wasteful number, since it uses less digits than its factorization.

361220321631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9262059545.

The product of its (nonzero) digits is 7776, while the sum is 30.

Adding to 361220321631 its reverse (136123022163), we get a palindrome (497343343794).

The spelling of 361220321631 in words is "three hundred sixty-one billion, two hundred twenty million, three hundred twenty-one thousand, six hundred thirty-one".